Nursick said Amtrak Acela train 2190 to Boston hit the person. He said all train traffic in the area was put on hold after the incident. Shoreline East had tweeted at about 8:40 a.m. that its service was suspended indefinitely because of “police activity.”

At about 10:25 a.m., the railroad tweeted its service had resumed. It said trains 1616 eastbound and 1659 westbound would be running on time.

According to emergency radio reports, the person was hit near the track intersection with New Quarry Road in the southwestern corner of Guilford, near the town line with Branford.

The incident was initially reported to Branford rescue crews. They were dispatched to the area near Totoket and Pleasant Point roads.

Branford firefighters reportedly found a train stopped in the area but found the person was actually hit near New Quarry Road in Guilford.